EP 1740769 B1 20141022 - METHOD FOR THE PRODUCTION OF PAPER AND CARDBOARD, CORRESPONDING NOVEL RETENTION AND DRAINING AGENTS, AND PAPER AND CARDBOARD THUS OBTAINED
Title (en)
METHOD FOR THE PRODUCTION OF PAPER AND CARDBOARD, CORRESPONDING NOVEL RETENTION AND DRAINING AGENTS, AND PAPER AND CARDBOARD THUS OBTAINED
Title (de)
VERFAHREN ZUR HERSTELLUNG VON PAPIER UND PAPPE, NEUE HILFSMITTEL ZUR VERBESSERUNG DER RETENTION UND ENTWÄSSERUNG UND DIE SO HERGESTELLTEN PAPIERE UND PAPPEN
Title (fr)
PROCEDE DE FABRICATION DE PAPIER ET CARTON, NOUVEAUX AGENTS DE RETENTION ET D'EGOUTTAGE CORRESPONDANTS, ET PAPIERS ET CARTONS AINSI OBTENUS
Publication
Application
Priority
- FR 2004050572 W 20041108
- FR 0404582 A 20040429
- FR 0451503 A 20040712
Abstract (en)
[origin: WO2005116336A1] The invention relates to a method for the production of cardboard or similar, consisting in initially adding at least one main retention agent consisting of a cationic co(polymer) to the fibrous suspension, then optionally shearing the flocks thus obtained, characterized in that at least one secondary retention agent selected from the group comprising silica derivatives and anionic or amphoteric organic polymers is added to the suspension, either separately or in a mixture, in one direction or in another, in addition to at least one tertiary retention agent consisting of a cross-linked anionic organic polymer whose size is greater than or equal to 1 micrometer and whose intrinsic viscosity is less than 3 dl/g.
IPC 8 full level
D21H 21/10 (2006.01); D21H 23/76 (2006.01); D21H 17/42 (2006.01)
CPC (source: EP US)
D21H 21/10 (2013.01 - EP US); D21H 23/765 (2013.01 - EP US); D21H 17/42 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2005116336 A1 20051208; EP 1740769 A1 20070110; EP 1740769 B1 20141022; ES 2523139 T3 20141121; FR 2869626 A3 20051104; JP 2007534858 A 20071129; JP 5053077 B2 20121017; US 2009050282 A1 20090226; US 7815771 B2 20101019
DOCDB simple family (application)
FR 2004050572 W 20041108; EP 04805815 A 20041108; ES 04805815 T 20041108; FR 0451503 A 20040712; JP 2007510063 A 20041108; US 56806306 A 20061018